228098881 has 2 divisors, whose sum is σ = 228098882. Its totient is φ = 228098880.

The previous prime is 228098879. The next prime is 228098951. The reversal of 228098881 is 188890822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 185640625 + 42458256 = 13625^2 + 6516^2 .

It is a cyclic number.

It is not a de Polignac number, because 228098881 - 2¹ = 228098879 is a prime.

It is a super-3 number, since 3×228098881³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 228098879, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (228098831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114049440 + 114049441.

It is an arithmetic number, because the mean of its divisors is an integer number (114049441).

Almost surely, 2^228098881 is an apocalyptic number.

It is an amenable number.

228098881 is a deficient number, since it is larger than the sum of its proper divisors (1).

228098881 is an equidigital number, since it uses as much as digits as its factorization.

228098881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 147456, while the sum is 46.

The square root of 228098881 is about 15102.9427927143. The cubic root of 228098881 is about 610.9997767783. Note that the first 3 decimals are identical.

The spelling of 228098881 in words is "two hundred twenty-eight million, ninety-eight thousand, eight hundred eighty-one".